The Nike Air Zoom Alphafly NEXT% 3 ‘Prototype’ presents the debut colorway of the performance running shoe, which was worn during the development phase by Kelvin Kiptum as he claimed a new marathon world record with a time of 2:00:35. An oversized black Swoosh decorates a contrasting white Atomknit upper, featuring notched laces, an integrated knit tongue and lofted Flyknit heel pods for a comfortable fit. Lightweight cushioning is provided by a high-stack ZoomX foam midsole, fitted with a full-length carbon fiber plate and dual Zoom Air units in the forefoot.